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What is “2's Complement”?
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Two's complement is a clever way of storing integers so that common math problems are very simple to implement.
To understand, you have to think of the numbers in binary.
It basically says,
for zero, use all 0's.
for positive integers, start...
what is the basic difference between stack and queue?
What is the basic difference between stack and queue??
11 Answers
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What is the difference between synchronous and asynchronous programming (in node.js)
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The difference is that in the first example, the program will block in the first line. The next line (console.log) will have to wait.
In the second example, the console.log will be executed WHILE the query is being processed. That is, the ...
How does the bitwise complement operator (~ tilde) work?
Why is it that ~2 is equal to -3? How does ~ operator work?
15 Answers
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C# : 'is' keyword and checking for Not
This is a silly question, but you can use this code to check if something is a particular type...
12 Answers
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Understanding Python's “is” operator
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You misunderstood what the is operator tests. It tests if two variables point the same object, not if two variables have the same value.
From the documentation for the is operator:
The operators is and is not test for object ...
Which is the fastest algorithm to find prime numbers?
Which is the fastest algorithm to find out prime numbers using C++? I have used sieve's algorithm but I still want it to be faster!
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How to detect when cancel is clicked on file input?
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document.body.onfocus = function(){ /*rock it*/ }
What's nice about this, is that you can attach/detach it in time with the file event, and it also seems to work fine with hidden inputs (a definite perk if you're using a visual workaround for the crappy default input type='file'). After that, y...
How much is the overhead of smart pointers compared to normal pointers in C++?
How much is the overhead of smart pointers compared to normal pointers in C++11? In other words, is my code going to be slower if I use smart pointers, and if so, how much slower?
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In Functional Programming, what is a functor?
...ticle ) or incredibly vague descriptions (see the section on Functors at this ocaml-tutorial website ).
17 Answers
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